After seven day working on these topic i could able to find the solution that we can implement multiple database through custom component
the steps are:
1.create a database application in the new window.
2.now create a custom component in your existant application.
3.copy the code of database into the custom component source,
4.than drag that component into your application..
5.it works and you can implement as much as database table simply without any kind of logic.
